Those of the Negeb shall possess Mount Esau, and those of the Shephelah shall possess the land of the Philistines; they shall possess the land of Ephraim and the land of Samaria, and Benjamin shall possess Gilead.
Obadiah 1:19

This isn't a reference to Arabs or any other non-Israelite people, but to the descendants of Jacob who were once driven to remote places. God will bring them back and eventually restore them to the full extent of the Promised Land.